diff --git a/nbs/src/nixtla_client.ipynb b/nbs/src/nixtla_client.ipynb
index 8794da15..2e2f324b 100644
--- a/nbs/src/nixtla_client.ipynb
+++ b/nbs/src/nixtla_client.ipynb
@@ -58,6 +58,7 @@
     "import orjson\n",
     "import pandas as pd\n",
     "import utilsforecast.processing as ufp\n",
+    "import zstandard as zstd\n",
     "from tenacity import (\n",
     "    RetryCallState,\n",
     "    retry,\n",
@@ -727,7 +728,13 @@
     "        else:\n",
     "            self.supported_models = ['timegpt-1', 'timegpt-1-long-horizon']\n",
     "\n",
-    "    def _make_request(self, client: httpx.Client, endpoint: str, payload: dict[str, Any]) -> dict[str, Any]:\n",
+    "    def _make_request(\n",
+    "        self,\n",
+    "        client: httpx.Client,\n",
+    "        endpoint: str,\n",
+    "        payload: dict[str, Any],\n",
+    "        multithreaded_compress: bool,\n",
+    "    ) -> dict[str, Any]:\n",
     "        def ensure_contiguous_arrays(d: dict[str, Any]) -> None:\n",
     "            for k, v in d.items():\n",
     "                if isinstance(v, np.ndarray):\n",
@@ -747,10 +754,15 @@
     "\n",
     "        ensure_contiguous_arrays(payload)\n",
     "        content = orjson.dumps(payload, option=orjson.OPT_SERIALIZE_NUMPY)\n",
-    "        content_size_mb = len(content) / (1024*1024)\n",
+    "        content_size_mb = len(content) / 2**20\n",
     "        if content_size_mb > 200:\n",
     "            raise ValueError(f'The payload is too large. Set num_partitions={math.ceil(content_size_mb / 200)}')\n",
-    "        resp = client.post(url=endpoint, content=content)\n",
+    "        headers = {}\n",
+    "        if content_size_mb > 10:\n",
+    "            threads = -1 if multithreaded_compress else 0\n",
+    "            content = zstd.ZstdCompressor(level=1, threads=threads).compress(content)\n",
+    "            headers['content-encoding'] = 'zstd'\n",
+    "        resp = client.post(url=endpoint, content=content, headers=headers)\n",
     "        try:\n",
     "            resp_body = orjson.loads(resp.content)\n",
     "        except orjson.JSONDecodeError:\n",
@@ -769,11 +781,13 @@
     "        client: httpx.Client,\n",
     "        endpoint: str,\n",
     "        payload: dict[str, Any],\n",
+    "        multithreaded_compress: bool = True,\n",
     "    ) -> dict[str, Any]:\n",
     "        return self._retry_strategy(self._make_request)(\n",
     "            client=client,\n",
     "            endpoint=endpoint,\n",
     "            payload=payload,\n",
+    "            multithreaded_compress=multithreaded_compress,\n",
     "        )\n",
     "\n",
     "    def _make_partitioned_requests(\n",
@@ -790,7 +804,11 @@
     "        with ThreadPoolExecutor(max_workers) as executor:\n",
     "            future2pos = {\n",
     "                executor.submit(\n",
-    "                    self._make_request_with_retries, client, endpoint, payload\n",
+    "                    self._make_request_with_retries,\n",
+    "                    client=client,\n",
+    "                    endpoint=endpoint,\n",
+    "                    payload=payload,\n",
+    "                    multithreaded_compress=False,\n",
     "                ): i\n",
     "                for i, payload in enumerate(payloads)\n",
     "            }\n",
@@ -2249,6 +2267,48 @@
     "nixtla_client.validate_api_key()"
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "#| hide\n",
+    "# test compression\n",
+    "captured_request = None\n",
+    "\n",
+    "class CapturingClient(httpx.Client):  \n",
+    "    def post(self, *args, **kwargs):\n",
+    "        request = self.build_request('POST', *args, **kwargs)\n",
+    "        global captured_request\n",
+    "        captured_request = {\n",
+    "            'headers': dict(request.headers),\n",
+    "            'content': request.content,\n",
+    "            'method': request.method,\n",
+    "            'url': str(request.url)\n",
+    "        }\n",
+    "        return super().post(*args, **kwargs)\n",
+    "\n",
+    "@contextmanager\n",
+    "def capture_request():\n",
+    "    original_client = httpx.Client\n",
+    "    httpx.Client = CapturingClient\n",
+    "    try:\n",
+    "        yield\n",
+    "    finally:\n",
+    "        httpx.Client = original_client\n",
+    "\n",
+    "# this produces a 12MB payload\n",
+    "series = generate_series(2_500, n_static_features=2)\n",
+    "with capture_request():\n",
+    "    nixtla_client.forecast(df=series, freq='D', h=1, hist_exog_list=['static_0', 'static_1'])\n",
+    "\n",
+    "assert captured_request['headers']['content-encoding'] == 'zstd'\n",
+    "content = captured_request['content']\n",
+    "assert len(content) < 12 * 2**20\n",
+    "assert len(zstd.ZstdDecompressor().decompress(content)) > 12 * 2**20"
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": null,
diff --git a/nixtla/nixtla_client.py b/nixtla/nixtla_client.py
index ce064209..fe40e50c 100644
--- a/nixtla/nixtla_client.py
+++ b/nixtla/nixtla_client.py
@@ -28,6 +28,7 @@
 import orjson
 import pandas as pd
 import utilsforecast.processing as ufp
+import zstandard as zstd
 from tenacity import (
     RetryCallState,
     retry,
@@ -652,7 +653,11 @@ def __init__(
             self.supported_models = ["timegpt-1", "timegpt-1-long-horizon"]
 
     def _make_request(
-        self, client: httpx.Client, endpoint: str, payload: dict[str, Any]
+        self,
+        client: httpx.Client,
+        endpoint: str,
+        payload: dict[str, Any],
+        multithreaded_compress: bool,
     ) -> dict[str, Any]:
         def ensure_contiguous_arrays(d: dict[str, Any]) -> None:
             for k, v in d.items():
@@ -673,12 +678,17 @@ def ensure_contiguous_arrays(d: dict[str, Any]) -> None:
 
         ensure_contiguous_arrays(payload)
         content = orjson.dumps(payload, option=orjson.OPT_SERIALIZE_NUMPY)
-        content_size_mb = len(content) / (1024 * 1024)
+        content_size_mb = len(content) / 2**20
         if content_size_mb > 200:
             raise ValueError(
                 f"The payload is too large. Set num_partitions={math.ceil(content_size_mb / 200)}"
             )
-        resp = client.post(url=endpoint, content=content)
+        headers = {}
+        if content_size_mb > 10:
+            threads = -1 if multithreaded_compress else 0
+            content = zstd.ZstdCompressor(level=1, threads=threads).compress(content)
+            headers["content-encoding"] = "zstd"
+        resp = client.post(url=endpoint, content=content, headers=headers)
         try:
             resp_body = orjson.loads(resp.content)
         except orjson.JSONDecodeError:
@@ -697,11 +707,13 @@ def _make_request_with_retries(
         client: httpx.Client,
         endpoint: str,
         payload: dict[str, Any],
+        multithreaded_compress: bool = True,
     ) -> dict[str, Any]:
         return self._retry_strategy(self._make_request)(
             client=client,
             endpoint=endpoint,
             payload=payload,
+            multithreaded_compress=multithreaded_compress,
         )
 
     def _make_partitioned_requests(
@@ -718,7 +730,11 @@ def _make_partitioned_requests(
         with ThreadPoolExecutor(max_workers) as executor:
             future2pos = {
                 executor.submit(
-                    self._make_request_with_retries, client, endpoint, payload
+                    self._make_request_with_retries,
+                    client=client,
+                    endpoint=endpoint,
+                    payload=payload,
+                    multithreaded_compress=False,
                 ): i
                 for i, payload in enumerate(payloads)
             }
diff --git a/setup.py b/setup.py
index adf0cdd6..bf18ab4d 100644
--- a/setup.py
+++ b/setup.py
@@ -48,6 +48,7 @@
         "tenacity",
         "tqdm",
         "utilsforecast>=0.2.8",
+        "zstandard",
     ],
     extras_require={
         "dev": dev + plotting + date_extras,